Electro- and Photodisintegration Cross Sections of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Cu</mi></mrow><mrow><mn>63</mn></mrow></msup></mrow></math></span>

M. B. Scott; A. O. Hanson; D. W. Kerst

doi:10.1103/PhysRev.100.209

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Electro- and Photodisintegration Cross Sections of ${Cu}^{63}$

M. B. Scott, A. O. Hanson, and D. W. Kerst

Department of Physics, University of Illinois, Urbana, Illinois

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Phys. Rev. 100, 209 – Published 1 October, 1955

DOI: https://doi.org/10.1103/PhysRev.100.209

Abstract

Highly monoergic electrons from a 22-Mev betatron have been used to study the ${Cu}^{62}$ activity in a pair of 2-mil copper foils separated by a 10-mil copper radiator. The ratio of the photodisintegration to electro-disintegration in the foils decreases by less than 10% in the region from 14 to 20 Mev. The measured value of $F$ at 20 Mev is 8.6 in reasonable agreement with the extrapolation of previous measurements at higher energies and with the value of 8.38 expected on the basis of simple virtual photon calculations. Analysis of the excitation curves gave a ${Cu}^{63} (γ, n)$ cross section of 80× $10^{- 27}$ ${cm}^{2}$ which is 20% below most previous measurements.

References (18)

Skaggs, Laughlin, Hanson, and Orlin, Phys. Rev. 73, 420 (1948)
L. H. Lanzl and A. O. Hanson, Phys. Rev. 83, 951 (1951)
K. L. Brown and R. Wilson, Phys. Rev. 93, 443 (1954)
A. I. Berman and K. L. Brown, Phys. Rev. 96, 83 (1954)
Goldwasser, Mills, and Hanson, Phys. Rev. 88, 1137 (1952)
M. Birnbaum, Phys. Rev. 93, 146 (1954)
Katz, Penfold, and Spicer (private communication)
R. G. Baker and L. Katz, Nucleonics 11, 14 (1953)
M. B. Scott (unpublished report)
L. Katz and A. G. W. Cameron, Can. J. Phys. 29, 518 (1951)
J. S. Blair, Phys. Rev. 75, 907 (1949)
B. Rossi, High Energy Particles (Prentice-Hall, Inc., New York, 1952), p. 48
B. C. Diven and G. M. Almy, Phys. Rev. 80, 407 (1950)
V. E. Krohn and E. F. Schrader, Phys. Rev. 87, 685 (1952)
Karl Strauch, Ann. Rev. Nuc. Sci. 2, 108 (1952)
S. Shimizu, Mem. Coll. Sci., Univ. Kyoto 25, 325 (1949)
J. H. Carver and E. Kondaiah, Phil. Mag. 45, 988 (1954)
L. D. Marinelli, Ann. Rev. Nuc. Sci. 3, 249 (1953)

[c1] Skaggs, Laughlin, Hanson, and Orlin, Phys. Rev. 73, 420 (1948)

[c2] L. H. Lanzl and A. O. Hanson, Phys. Rev. 83, 951 (1951)

[c3] K. L. Brown and R. Wilson, Phys. Rev. 93, 443 (1954)

[c4] A. I. Berman and K. L. Brown, Phys. Rev. 96, 83 (1954)

[c5] Goldwasser, Mills, and Hanson, Phys. Rev. 88, 1137 (1952)

[c6] M. Birnbaum, Phys. Rev. 93, 146 (1954)

[c7] Katz, Penfold, and Spicer (private communication)

[c8] R. G. Baker and L. Katz, Nucleonics 11, 14 (1953)

[c9] M. B. Scott (unpublished report)

[c10] L. Katz and A. G. W. Cameron, Can. J. Phys. 29, 518 (1951)

[c11] J. S. Blair, Phys. Rev. 75, 907 (1949)

[c12] B. Rossi, High Energy Particles (Prentice-Hall, Inc., New York, 1952), p. 48

[c13] B. C. Diven and G. M. Almy, Phys. Rev. 80, 407 (1950)

[c14] V. E. Krohn and E. F. Schrader, Phys. Rev. 87, 685 (1952)

[c15] Karl Strauch, Ann. Rev. Nuc. Sci. 2, 108 (1952)

[c16] S. Shimizu, Mem. Coll. Sci., Univ. Kyoto 25, 325 (1949)

[c17] J. H. Carver and E. Kondaiah, Phil. Mag. 45, 988 (1954)

[c18] L. D. Marinelli, Ann. Rev. Nuc. Sci. 3, 249 (1953)

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Electro- and Photodisintegration Cross Sections of ${Cu}^{63}$

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Electro- and Photodisintegration Cross Sections of Cu63

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References (18)

Electro- and Photodisintegration Cross Sections of ${Cu}^{63}$